Wow. I'd love to see the 3D-simulation including Connector and via with +/-5%
Impedance at 70GHz and a result of -17dB RL grom 50-70GHz. Usually these
Frequencies require LTCC technology with direct Die attachment, which coax
connector did you plan to use?
BR
Gert
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-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On ;
Behalf Of SureshKumar Ayyavu
Sent: Thursday, April 06, 2017 11:56 AM
To: eric@xxxxxxxxxxxxxxx
Cc: si-list@xxxxxxxxxxxxx; eric@xxxxxxxxxxxxxxx; Hindle, Patrick
<phindle@xxxxxxxxxxxxx>; Love, Janine <jlove@xxxxxxxxxxxxx>
Subject: [SI-LIST] Return loss
Dear Experts,
I'm working on the optimization of a PCB for 50 to 70 frequency band... For
this frequency band , I'm expecting RL<-17dB.
My topology is DUT via - Coplanar line - via - microstrip - connector.
I did the simulation and get the 50 ohm +_5% for the whole path. But the RL is
very poor in 50-70 GHz band.
Please guide , how to improve the RL in that frequency band ???
Thanks
Suresh
Sent from my iPhone
On 29-Mar-2017, at 7:35 PM, Eric Bogatin <eric@xxxxxxxxxxxxxxx> wrote:------------------------------------------------------------------
Ever wonder just what is a Smith Chart and should I care? Check out my
latest blog on the SI Journal:
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--eric
*******************************************************
Dr. Eric Bogatin
Dean, <http://www.bethesignal.com/> Signal Integrity Academy
Editor, <https://www.signalintegrityjournal.com/> Signal Integrity
Journal,
Adjunct Prof, ECEE Univ of Colorado, Boulder
Director, Teledyne LeCroy Front Range Signal Integrity Lab
105 S Sunset St, Suite J
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Twitter @beTheSignal
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